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Summary of Calibration (90% Deliverable)

Summary of Calibration (90% Deliverable). February 10, 2009 AECOM, Inc. and A.D.A. Engineering, Inc. Agenda. Review flood profiles Summarize bridge overtopping and flooding Peak stage and flow results Flooding maps What if we had 1995 rainfall today

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Summary of Calibration (90% Deliverable)

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  1. Summary of Calibration (90% Deliverable) February 10, 2009 AECOM, Inc. and A.D.A. Engineering, Inc.

  2. Agenda • Review flood profiles • Summarize bridge overtopping and flooding • Peak stage and flow results • Flooding maps • What if we had 1995 rainfall today • Compare the SLCWP flows to 100-year simulation results • Summarize problems and challenges

  3. Surface Water Calibration Statistics • Green is good, yellow is OK, orange is not good

  4. Ground Water Calibration Statistics • Green is good, yellow is OK, orange is not good

  5. Plot of Surface Water Calibration Statistics

  6. Plot of Groundwater Calibration Statistics • L-5844 is located on the edge of a ravine and the model elevation is 6 feet higher than the actual elevation, so calibration is off • All other stations are either good or OK

  7. North Branch of the Estero River

  8. South Branch of the Estero River

  9. Halfway Creek Headwater and Tailwater Stations

  10. South Branch of Halfway Creek Headwater and Tailwater Stations

  11. Copperleaf Station in Upper Halfway Creek • This station is located in a Brooks lake east of Three Oaks Parkway

  12. South Branch of the Spring Creek at Old U.S. 41

  13. Kehl Canal Headwater and Tailwater Stations Probably bad data

  14. Imperial River at Orr Road

  15. Selected Groundwater Plots East of I-75 and North of Corkscrew Road East of I-75 and South of Kehl Canal

  16. Overland Flow Depths, Peak Depth after Tropical Storm Ernesto in September, 2006

  17. Summary of Calibration • Good calibration overall • Some instabilities in the model for the Estero River and some groundwater stations east of I-75 • Spring Creek flow calibration not as good as desired, however measured data for the split of flows between the north and south Branch are not available • Calibration of Halfway Creek was achieved by adjusting irrigation parameters and modifying rainfall runoff process to account for stormwater detention • The model is ready for design storm modeling, but as we will see in the next presentation, the design storm modeling uncovered some small flaws that are being fixed

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